The New International Version renders the phrase “now we see through a glass, darkly” as “now we see but a poor reflection as in a mirror.” Paul referred to mirrors of Bibles times that were made of highly polished metal (read Exodus 38:8).
Unlike our modern glass mirrors, these metal mirrors gave a poor reflection. Paul was saying that our spiritual vision as believers is blurred by earthly distractions as long as we remain in this world. It’s just like looking at ourselves in an inferior looking glass.
But we will be able to see and understand more distinctly when we are face-to-face with the Lord in heaven.
During Bible times, metal mirrors provided the user with a poor reflection of reality.
1 CORINTHIANS 13:12 – For now we see through a glass, darkly; but then face to face.